Final answer:
To display only pixel-based layers in a Photoshop document, select the 'Pixel' filter type in the Layers panel. This will hide all non-pixel layers such as adjustment layers or text layers, making it easier to manage pixel data.
Step-by-step explanation:
When working on a Photoshop document that contains many layers and you need to display only the layers that contain pixel based data, you should select the Pixel filter type in the Layers panel. This filter will allow you to view and manage layers that contain image content, effectively hiding any adjustment layers, shape layers, or text layers that contain vector or non-pixel data. You can toggle this filter by clicking on the filter options at the top of the Layers panel and choosing Pixel from the dropdown menu.
Remember that to see the layers isolated from one another, you can click on the eye icon next to a layer to toggle its visibility. Click once to turn the layer on and click again to turn it off. If you need to focus on particular layers without the distraction of other visible layers, you may need to turn other layers off.